class ShortInputException(Exception):'''A user-defined exception class.'''def __init__(self, length, atleast):Exception.__init__(self)self.length = lengthself.atleast = atleasttry:text = input('Enter something --> ')if len(text) < 3:raise ShortInputException(len(text), 3)# Other work can continue as usual hereexcept EOFError:print('Why did you do an EOF on me?')except ShortInputException as ex:print(('ShortInputException: The input was ' +'{0} long, expected at least {1}').format(ex.length, ex.atleast))else:print('No exception was raised.')
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